EP 2208854 A2 20100721 - Well tools incorporating valves operable by low electrical power input
Title (en)
Well tools incorporating valves operable by low electrical power input
Title (de)
Bohrlochwerkzeuge, die Ventile integrieren, die bei geringer Stromeinspeisung betreibbar sind
Title (fr)
Outils de puits intégrant de soupapes fonctionnant avec une faible quantité d'électricité
Publication
Application
Priority
US 35366409 A 20090114
Abstract (en)
Well tools including valves operable by low electrical input. One well tool includes a valve (30) which controls fluid communication between pressure regions (32,34) in a well, the valve including a rotatable member (48) which is biased to rotate, and a brake or clutch (46) which prevents rotation of the member. Another valve includes a barrier which separates reactants, with the valve being operable in response to the barrier being opened and the reactants thereby reacting with each other. Yet another valve includes a barrier which separates the pressure regions, and a control circuit which heats the barrier to a weakened state. Another valve includes a member displaceable between open and closed positions, a restraining device which resists displacement of the member, and a control device which degrades or deactivates the restraining device and thereby permits the member to displace between its open and closed positions, in response to receipt of a predetermined signal.
IPC 8 full level
E21B 23/04 (2006.01); E21B 41/00 (2006.01)
CPC (source: EP US)
E21B 34/063 (2013.01 - EP US)
Citation (applicant)
- US 5558153 A 19960924 - HOLCOMBE MICHAEL W [US], et al
- US 7197923 B1 20070403 - WRIGHT ADAM D [US], et al
- US 2008257031 A1 20081023 - IRANI CYRUS A [US], et al
- US 20301108 A 20080902
- US 3195637 A 19650720 - WAYTE ALFRED E
- US 5177548 A 19930105 - NAKAMURA SHINICHI [JP], et al
- US 5575331 A 19961119 - TERRELL JAMIE B [US]
- US 2918125 A 19591222 - SWEETMAN WILLIAM G
- US 5622211 A 19970422 - MARTIN JOHN R [US], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2208854 A2 20100721; BR PI1000191 A2 20110614; US 2010175867 A1 20100715; US 2012241143 A1 20120927; US 8235103 B2 20120807; US 9593546 B2 20170314
DOCDB simple family (application)
EP 10150661 A 20100113; BR PI1000191 A 20100108; US 201213489504 A 20120606; US 35366409 A 20090114